Coupling.



U. R. PATTY.

COUPLING.

APPLICATION FILED AEE.24,1:,13.

WITNESSES ATTORNEY UN TED STATES PATENT OFFICE.

"ELARENCE R. PATTY, 0F MEMPHIS, TENNESSEE.

COUPLING.

Specification of Letters Patent.

Patented May-26, 1914.

Application filed April 24, 1913. Serial No. 763,307.

cause a separation of the hose from the part to which it is connected. When hose is new almost any simple clamp is sufiicient to hold the hose, but when the hose has been in use for some time and the rubber becomes soft on the inside the ordinary hose connections fail.

In accordance with the present invention there is provided a hose receiving member designed to be introduced into the end of the hose to be connected to some other conduit, while exterior to the hose a suitable number of wedge shaped clamp members are applied, and these wedge shaped clamp members are lodged in a conical sleeve of a size to receive. the corresponding end of the hose and the inner holding member. The sleeve is enlarged at one end and is there internally threaded to receive a threaded thrust collar or nut applied to the interior threaded portion of the conical sleeve in a manner to bear upon the member first introduced into the hose, and to bring the conical sleeve and the conical segments lodged therein into such relation to the thrust member that these conical segments are forcedtightly against the exterior.

of the hose to become in part embedded therein and to in turn cause the embedding of the hose into the inner member which is toothed or otherwise shaped to permit the embedding. By this means no matter if the hose be old and the rubber soft it is firmly held against any internal pressure or other force tending to separate it from the coupling.

The-invention will be best understood from a consideration of the following detailed description, taken in connection with the accompanying drawings forming a part of this specification, with the further understanding that while the drawings show a practical embodiment of the invention, the latter is not confined to any strict conformity with the showing of the drawings, but may be changed and modified so long as such changes and modifications mark no material departure from the salient features of the invention.

In the drawings :Figure 1 is an elevation of the improved coupling showing a small section of rubber hose at one end and a pipe connection at the other. Fig. 2 is a longitudinal diametric section of the structure shown in Fig. 1. Fig. 3 is a section on the line 3-3 of Fig. 2. Fig. 4 is a perspective view of one of the conical clamp segments.

Referring to the drawings, there is shown a tubular member 1 having an internal bore 2 and at oneend this tubular member is provided with a threaded neck 3 for receiving a pipe 4 which it is desired should be placed in communication with hose ,5, such hose being what is ordinarily known as rubber hose and may be of the quality known as steam hose, since the invention is designed to be useful where comparatively high pressures are employed, and such quality of hose is customarily used for such pur pose. The end of the tubular member 1 remote from the neck or nipple 3 is formed with an axially extended neck 6 having its interior forming a continuation of the bore 2 and on the exterior formed with alongitudinal series of circularly arranged teeth 'or ledges 7 directed towardthe body of the tubular member. Where the tubular mem her is joined by the neck 6 it is laterally expanded and has its margins formed with a radially projecting flange 8. Adjacent the neck 3 the tubular member is of hexagonal -or other suitable shape, as indicated at 9,

for the application of a wrench or other tool.

Adapted to the exterior of the tubular member between the flange 8 and the hex agonal portion 9 is a nut 10 having one end polygonal, as indicated at 11, for the application of a suitable tool and the other end internall grooved, as indicated at 12, to receive tie flange 8, while the exterior of the nut is screw threaded, as indicated at 13. There is also provided a sleeye 14 having an internally tapered wall 15 contracting the internal diameter of the sleeve toward the corresponding end until the smaller end 16 of the sleeve is of a size to snugly embrace of greater external diameter than the nut 10 the hose 5. The other end 17 of the sleeve is larger end of the taper wall 15 of the sleeve 14. Adapted to the taper portion of the sleeve 14 are taper clamp segments 19 each curved in conformity with the wall 15 and also tapering in conformity with this wall and the segments are usually though not necessarily three in number. These segments when their edges are in contact have an internal diameter less than the external diameter of the hose 5 and agree in curvature to the curvature of the tapering wall 15. These segments 19 have an outer taperin wall 20 and ancinnersubstantiallycylindrical wall 21 in which are produced numerous parallel circumferential grooves 22. The length of the segments 19 may be substantially that of the neck 6, While the length of the sleeve 14; is such as to house the seg ments and project beyond them when applied to the hose about the neck 6 so as to prevent the hose from bending where clamped, and thus prevent liability of the hose breaking.

is introduced through the small end 16 of 1 corresponding end of the tubular member 1.

,N ow the segments 19 are introduced into the sleeve 14 about the hose, so that their thicker ends are adjacent the flange 8 and then by screwing the nut 10 into the; internally threaded end 17 of the sleeve 14 the taper wall 15 is drawn along the outer taper wall 20 of the segments 19, but these segments cannot move along the hose because of the abutment of their-thicker ends against theshoulder formed at the flanged end of the tubular member 1. The result of this is that the inner walls of the segments 19 are forced directlyinto the body of the hose in y quite soft, and this elampmg is commensu,

'10 into'the sleeve extension 17.

When the parts are assembled the hose 5 The hose is thereby.

rate with the extent of screwing of the nut is that even under strong internal pressures the hose is firmly held, and, moreover, all tendency of leakage is avoided. The bore 2 may be approximately that of the hose 5, for hose will give to a certain extent, thus permitting the introduction of the neck 6 even though the external diameter thereof be somewhat in excess of the bore of the hose. It will be observed that the clamping of the hose is accomplished without the movement of any parts engaging the hose longitudinal thereof and with all threaded portions maintaining their proper relation.

What is claimed is A hose coupling comprising a tubular member formed at one end with a hose ontering neck from which the tubular member is laterally expanded and formed into a radially projecting peripheral flange, an externally threaded nut iuleriorly adapted to The result the tubular member and provided at one end with a groove for receiving said flange, and of substantially the length of the flange axially, a sleeve having one end internally threaded and of a size to receive the nut, the other end of the sleeve being internally tapered, and a series of segmental exteriorly tapered members each having the inner wall shaped for engagement with the exterior of a portion of hose applied to the hose entering neck of the tubular member,

said taper members each having the outer wall shaped for direct engagement with the I inner taper wall of the sleeve and each of a size to permit abutment of its thicker end a with the flange end of the tubular member and thatportion of the sleeve surrounding the segmental taper members being of a length to house the taper members and extend beyond them and also beyond the neck receiving the hose and there of a diameter V to closely approach the hose when applied to the couplingto prevent the hose from bending where clamped to the neck.

In testimony that I claim the foregoing as my own, I have hereto afiixed my signature in the presence of two witnesses.

CLARENCE R. PATTY.

\Vitnesses:

M. W. TWAYNE, MYRTLE SLAUGHTER. 

